Here we have self-contained vignettes of character and plot, brief flashes of insight taken aside from their normal context to stand alone. If you've ever had a perfect scene you wanted to write and were only waiting for the perfect moment to spring it on your fellow players-- a moment, perhaps, that never actually came, or came and went, but you missed it. You put that here.

It's about pure interaction-- assign the premise, drop in the characters, and bang! Go. Write.